Alert archive / Oklahoma / Tornado Watches in 2022
Tornado Watch 580
The Storm Prediction Center issued this tornado watch at Dec 12, 2022, 9:54 PM CST for 19 counties in Oklahoma; 8 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 12, 2022, 9:54 PM CST (03:54 UTC)
- Expired
- Dec 13, 2022, 4:00 AM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 65 kt
All 27 counties
Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Jefferson County, OK, Kiowa County, OK, Major County, OK, Roger Mills County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Foard County, TX, Hardeman County, TX, Knox County, TX, Wichita County, TX, Wilbarger County, TX
The radar
The Altus AFB radar (KFDR), 68 km from the middle of the area, began a volume at 03:56 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 13, 1:18 AM CST | Severe Thunderstorm Warning | OUN | Custer, Dewey, Major, Washita, Woods, Woodward | 42 min |
| Dec 13, 1:52 AM CST | Severe Thunderstorm Warning | OUN | Blaine, Custer, Dewey, Garfield, Kingfisher, Major | 38 min |
| Dec 13, 2:01 AM CST | Severe Thunderstorm Warning | OUN | Comanche, Kiowa, Tillman | 44 min |
| Dec 13, 2:28 AM CST | Severe Thunderstorm Warning | OUN | Blaine, Garfield, Kingfisher | 27 min |
| Dec 13, 2:32 AM CST | Severe Thunderstorm Warning | OUN | Comanche, Cotton, Grady, Jefferson, Stephens, Tillman | 43 min |
| Dec 13, 2:39 AM CST | Severe Thunderstorm Warning | OUN | Archer, Baylor, Wichita | 66 min |
| Dec 13, 3:15 AM CST | Severe Thunderstorm Warning | OUN | Cotton | 45 min |
| Dec 13, 3:31 AM CST | Severe Thunderstorm Warning | OUN | Archer | 44 min |
| Dec 13, 3:38 AM CST | Tornado Warning | OUN | Archer | 37 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 3.9 hours before the alert went out and 135 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 4 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 422 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 470 m²/s²
- 0-3 km storm-relative helicity
- 482 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 12, 7:12 PM CST | Mesoscale Discussion | SPC | Beaver, Texas | 3 hr |
| Dec 12, 8:25 PM CST | Tornado Watch | SPC | Beaver, Texas | 4 hr |
| Dec 12, 9:10 PM CST | Mesoscale Discussion | SPC | Beckham, Custer, Dewey, Ellis, Greer, Harmon and 7 more | 3 hr |
| Dec 12, 9:16 PM CST | Tornado Watch | SPC | Ellis, Harper, Woods, Woodward | 5 hr |
| Dec 12, 11:24 PM CST | Mesoscale Discussion | SPC | Beckham, Custer, Dewey, Ellis, Greer, Harmon and 6 more | 2 hr |
| Dec 13, 1:44 AM CST | Mesoscale Discussion | SPC | Alfalfa, Garfield, Grant, Kay, Kingfisher, Lincoln and 4 more | 61 min |
| Dec 13, 3:07 AM CST | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Cleveland, Coal, Garvin and 12 more | 113 min |
| Dec 13, 3:58 AM CST | Tornado Watch | SPC | Atoka, Bryan, Carter, Coal, Cotton, Hughes and 9 more | 7 hr |
| Dec 13, 6:00 AM CST | Mesoscale Discussion | SPC | Love | 90 min |
| Dec 13, 8:59 AM CST | Mesoscale Discussion | SPC | Bryan, Choctaw, McCurtain, Pushmataha | 2 hr |
| Dec 13, 9:07 AM CST | Tornado Watch | SPC | Choctaw, McCurtain, Pushmataha | 8 hr |
| Dec 13, 11:41 AM CST | Mesoscale Discussion | SPC | Anderson, Bowie, Camp, Cass, Cherokee, Delta and 25 more | 2 hr |
| Dec 13, 1:33 PM CST | Mesoscale Discussion | SPC | Anderson, Angelina, Cass, Cherokee, Gregg, Harrison and 17 more | 117 min |
| Dec 13, 2:12 PM CST | Mesoscale Discussion | SPC | Angelina, Cherokee, Gregg, Harrison, Houston, Marion and 6 more | 63 min |
| Dec 13, 2:15 PM CST | Tornado Watch | SPC | Angelina, Jasper, Nacogdoches, Newton, Polk, Sabine and 4 more | 8 hr |
| Dec 13, 3:51 PM CST | Mesoscale Discussion | SPC | Angelina, Harrison, Houston, Jasper, Madison, Nacogdoches and 9 more | 84 min |
| Dec 13, 4:44 PM CST | Mesoscale Discussion | SPC | Sabine, San Augustine, Shelby | 91 min |
Nearby
Tornado Watches in Oklahoma, 2022Tornado Watches in Texas, 2022Every tornado watch in 2022
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.